The Source (2017) is the ninth full-length studio album by Dutch progressive rock/metal rock opera project Ayreon. Here is a studio album to feature the voice of every primary vocalist to appear on the album. The cast of which is:
James LaBrie (Dream Theater) as The Historian
Tommy Giles Rogers (Between the Buried and Me) as The Chemist
Simone Simons (Epica) as The Counselor
Mike Mills (Toehider) as TH-1
Floor Jansen (Nightwish) as The Biologist
Hansi Kürsch (Blind Guardian) as The Astronomer
Tobias Sammet (Edguy) as The Captain
Michael Eriksen (Circus Maximus) as The Diplomat
Nils K. Rue (Pagan's Mind) as The Prophet
Zaher Zorgati (Myrath) as The Preacher
Tommy Karevik (Seventh Wonder) as The Opposition Leader
Russell Allen (Symphony X) as The President
